Portable vaporizer



July 18, 1950 H. R. RICH PORTABLE VAPORIZER 2 Sheets-Sheet 1 Filed June 10, 1944 July 18, 1950 H. R. RICH 2,515,256

PORTABLE VAPORIZER Filed June 10, 1944 2 Sheets-Sheet 2 I RN) 7 JNVENTOR. an fidzamim Y w m FE l lwl NWl QW INW'IQQW II HHHHHHIIH Patented July 18, 1950 PORTABLE VAPORIZER Hyman Richard Rich, Milwaukee, Wis., assignor,

by mesne assignments, to The vl )ivers ey porporation, Ghicago, 111., a corporation of Illinois Application June 10, 1944, Serial No. 539,649

4 Claims.

My invention relates to Vaporizers and particularly to Vaporizers which are operated by fluid under relatively high pressure ior commercial use. Vaporizers of this general sort are customarily used for applying insecticide in vapor form, for disinfecting purposes in warehouses, box cars, and rooms of various sortsof relatively large volume.

Among the objects of my invention is to provide a new and improved vaporizer for distributing liquid insecticide in vapor form into large rooms and compartments.

Another object of my invention is to provide a portable pressure vaporizer which is so constructed that liquid invapor form can be ejected from the device in a well directed stream so that it-will carry to the ceilings .and distant corners of relatively high room's.

Still another object :of my invention .is to pro.- vide a new and improved vaporizer of a portable character which utilizes a plurality of liquid vapor jets in order to concentrate a large volume oivapor in a single stream which can be carried a considerable distance from the vaporizer.

.A further object of my invention is to provide a. new and improved atomizer head for a vaporizer, the atomizer head having an annular auxiliary reservoir communicating with a tank. of liqmid and also with a plurality of jets so that liquid irom'the tank may be distributed uniformly to all the jets to enable a central pressure. chamber supplied with gas or other fluid under pressure to draw uniformly from the jets for distributing a large volume of liquid in vapor form.

.A still further object of my invention is topro- 'vide a-portable atomizer adapted to be operated in any position including means for setting the atomizer in a pre-selected position and directing the vapor emerging therefrom in any of a variety of directions.

With these and other objects in view my invention consists in the construction arrangement and combination of the various parts of my device whereby the objects contemplated are more .iully set forth,'pointed out in my claims and illustrated in the accompanying drawings in which:

Figure 1 is a longitudinal elevational view .of device, with a supporting stand in folded position,

Figure 2 is a longitudinal elevational view of my device drawn to a smaller scale with the. supporting stand extended tilting the device. in an upward direction,

-Eigure :3 is a crossgsectional view. of. the; outlet end of the device taken on the lined-3 of Figure 1,

Figure 4 is a plan view-oi the devic Figure 5 is an end view of theoutlet end of the device, and,

Figure 6 is a longitudinal sectional view of the outlet end of the device taken on the-line 66 of Figure t and drawn to a larger scale.

In the construction of commercial vaporizer-s for treating large spaces such as the rooms of warehouses with an atomized insecticide vaporizer devices. have been employed in multiple units and located in elevated positions so that-a cloud of vapor when emitted will cover eventually the entire space within the room. These devices, although effective forsome installations are-expen-' sive to operate when the room becomes excessively large and the ceiling relatively high. lihere are also occasions when it is not necessary to treat the entire. room with the vapor since only part of it may need fumigating.

The. vaporizer embodied in this invention is-a portable hand operated unit to which fluid pressure .is applied in order to eject the insecticide vapor with considerable force and it is so built that theemission of vapor canbe confined to :a; specific direction until it is many feet away from the vaporizer unit. With adevice of this sort vapor can be shot into remote cornersof the room and into pockets at: a relatively great distance from the floor and in other inaccessable localities which could not ordinarily be reached-by vaporizing devices previously known and used. I

In the embodiment of my invention herein illustrated, there is provided a cylindrical-body It! with flanged heads 12 and .114. The flanged heads are held against the respective ends of the body by a series of long bolts H3 which stretch between the flanges and which are provided with nuts I8 for drawing the heads tight-against the body in order to form a closed reservoir 20 for liquid.

At one end of the body there is provided a filler spout 22 closed byacap 24 and attaehed'to a boss25 in. the head It. A pipe28 is secured-"to a fitting 3|] in the head 12', the pipe extending along the lower portion of the reservoir tilto a position near the inlet end.

The fitting in turn connects with a Tillprovided with a plug 34. Also in-the head l:2there*is provided a ventingplug 36. having a bleeder passage 38 therein which in open position connects through a passage 41) with a vent passage 4 2-so that when. the valve is unscrewed-air can pass through these passages. into-the liquid reservoir! at a point adjacent the head i2. The vent may be closed by screwing the valve device 3'6 down into the threaded recess which is designed to receive it. In order that the reservoir 20 may be otherwise liquid tight there is provided a gasket 44 at each end against which the edge of the body I may be pressed.

A flange 46 extends outwardly from the head i2 as best seen in' Figure 6 and secured to the flange is a sleeve, or barrel 48. Within the barrel at a location nearer the outlet end of the barrel than the end attached to the flange there are provided a pair of partition walls 50 and 52 extending laterally across the barrel and forming between them a fluid pocket, or hollow feeding member 54. It will be noted that the fluid pocket, or feeding member thus formed communicates with the liquid reservoir through a nipple 55, the T 32, the fitting 3i? and the tube 28.

Inside of the pocket there is a cylindrical partition 53 centrally disposed relative to the pocket and extending in fluid tight relationship between the partition walls 50 and 52. The inner partition thus makes the fluid pocket 54 annular in shape and at the same time provides an inner recess 60 so as to divide the feeding member into a liquid feeding chamber and a fluid feeding chamber. A fitting 62 is attached to the inner partition and is connected in turn to a, T 64 which has a nipple B6 on one side extending through the wall of the barrel 48 and connected through an L 68 to a fluid pressure line 18. A short nipple 12 on the other side of the T is attached to a valve or faucet 14 provided with a handle 16 which can be opened in order to drain off liquid which'may collect within the T and the inner recess 60.

A series of three L-shaped liquid jets 18 provided with nozzles 80 are positioned equidistant about the center line of the barrel and are mounted in the partition wall 50 at points equidistant from the central axis and from each other. It will be noted that the outlets of the jets extend angularly inwardly but not directly toward the center and are all in the same plane parallel to the partition wall 50. The L-shaped jets communicate with the annular pocket and conduct liquid from the pocket outwardly to the point of vaporization.

Jet 82 for fluid under pressure are provided and are mounted upon the partition Wall 50. These fluid jets also are spaced about the central axis at points equidistant therefrom and equidistant from each other. The fluid jets communicate at one side with the inner recess 50 and are directed each in a line past the outlet of one of the liquid jets 80. Thus, each set of fluid jet 82 and liquid jet 80 forms an atomizing device. Apertures 81 are provided in the barrel 8 at positions substantially opposite the outlets of the liquid jets 80 for admitting air to this portion of the barrel. It should also be noted that the outer end 89 of the barrel extends a distance beyond the liquid jets 8B which is about the same as the distance between the outlets of the jets and the surface of the partition 50. In this way the jets are protected from blows which would throw them out of adjustment and a nozzle-like effect is secured in order to direct vapor which is blown outwardly by the jets.

. In operation the cap 24 on the filler spout is removed and liquid insecticide is poured into the reservoir 20 until it is practically full. During this operation the vent 36 may be opened. When it is. desired to carry the vaporizerabout from place to place the vent 36 should be closed by screwing it downward so that the hexagonal portion is pressed tight against the adjacent part of the head I2.

In operation the pipe 10 is attached to a suitable source of fluid pressure which may be steam, a cylinder of carbon-dioxide or air pressure. The device is directed toward the corner of a room which is to be treated and the vent valve 36 is opened. Fluid pressure is then turned on and the fluid pressure communicates through the L 68, the nipple 66, the T 64 and thence through the fitting 62 with the inner recess Bil. From here the fluid under pressure is distributed outwardly through the fluid jets 82 and this outward rush of fluid creates a suction effect at the outlets of the liquid jets so as to aspirate liquid therefrom and project it in an atomized stream. When the suction effect is set up liquid is drawn from the liquid reservoir 26 through the tube 28, the fitting 30, the T 32 and thence into the annular pocket 54. Since the liquid will flll the pocket 54 it will then be drawn uniformly outward from each of the liquid jets 80. Pressure fluid from the jets 32 will blow the liquid in vapor form outwardly from the end of the barrel 48 for a considerable distance before the stream spreads. Air admitted through the apertures 87 assists in confining the vapor stream to its initial direction and also assists in preventing condensation of the vapor on the outside edge 89 of the barrel. The vent valve 36 being open, air is admitted to the reservoir 20 to replace the liquid withdrawn therefrom. Should the pressure fluid used be steam or such fluid as might condense and collect within the T 64 the valve Hi may be opened after the operation is complete in order to drain the condensation from the inner recess 60 and the adjacent passages.

In order that the device may be mounted upon the floor or other surface the head M is provided with a low stand or supporting element 90 and the head I2 is provided with a hinge 92 to which is attached relatively high support 94 having a foot 96. As shown in Figure 1 the high support may be folded against the body or as shown in Figure 2 may be extended angularly downward until a portion adjacent the hinge is stopped against the lower side 93 of the head l2 in order that the vaporizer may be maintained in an upwardly tilted position.

In addition there is provided a handle I90 attached to a bracket I02 on the top side of the head I d, the handle being extended rearwardly beyond the head and in substantial alignment with the body. A second handle I04 is provided which extends laterally relative to the body and is attached thereto by means of a strap I66 which surrounds the body, the handle being secured to the strap by a nut and bolt connection Hi8.

There has thus been provided portable vaporizer which can be readily carried about by an operator or rested upon the floor and pointed in a desired direction and elevation. Fluid under pressure from a convenient source when connected to the device can be ejected together with an insecticide to treat selected portions of a room, the selected liquid insecticide being carried about in the reservoir of the device.

Some changes may be made in the construction and arrangement of the parts of my device without departing from the real object and purpose of my invention and it is my intention to cover by my claims any modified forms of structure or use of equivalents which may be reasonably included within their scope.

I claim as my invention:

1. A portable vaporizer for directing a stream of vapor to selected portions of a room comprising a hollow body forming a reservoir having a filler spout, an outlet at one end, and a vent valve communicating with the reservoir, a cylindrical barre] having one end attached to the body at the outlet end and the other end open, partition walls in the barrel forming a fluid pocket intermediate the ends of the barrel and a conduit connecting the pocket with the reservoir outlet, a partition within the pocket forming an inner recess and a conduit extending from the inner recess for conducting fluid under pressure to said inner recess, a plurality of liquid jets mounted on one of the partition walls remote from the reservoir, said jets communicating with said pocket and spaced equidistant from the center and from each other, and a plurality of fluid pressure jets mounted on said last named partition directed outwardly of the barrel adjacent the ends of the liquid jets and communicating with the inner recess for projecting atomized liquid from said liquid jets and from the barrel 2. A portable vaporizer for directing a stream of vapor to selected portions of a room comprising a hollow body forming a reservoir having a filler spout, an outlet at one end, and a vent valve communicating with the reservoir, a cylindrical barrel having one end attached to the body at the outlet end and the other end open, partition walls extending laterally relative to the barrel forming a fluid pocket intermediate the ends of the barrel and a conduit connecting the pocket with the reservoir outlet, a partition within the pocket forming a central inner recess and a conduit extending from the inner recess through the wall of the barrel for conducting fluid under pressure to said inner recess, a plurality of liquid jets mounted on the lateral partition wall remote from the reservoir, said jets communicating with said pocket and spaced equidistant from the center and from each other, the outlet ends thereof being directed angularly inward, and a plurality of fluid pressure jets mounted on said last named partition direct out wardly of the barrel adjacent the ends of the liquid jets and communicating with the inner recess for projecting atomized liquid from said liquid jets and from the barrel.

3. A portable vaporizer for directing a stream of vapor to selected portions of a room comprising an elongated hollow body forming a reservoir having a filled spout at one end, an outlet at the other end and a vent valve above and adjacent the outlet end communicating with the reservoir, a barrel adjacent the body at the outlet end, partition walls extending laterally relative to the barrel forming a pocket intermediate the ends of the barrel, an annular wall between said partition walls to divide the pocket into a cylindrical inner fluid recess and an annular liquid recess, a conduit extending rearwardly from the inner recess and then laterally through the wall of the barrel for conducting fluid under pressure to said inner recess, a plurality of L shaped liquid jets mounted on the lateral partition wall remote from the reservoir, said jets communicating with said annular liquid recess and being spaced equidistant from the center and from each other, the ends thereof being directed angularly inward, and a plurality of fluid pressure lets mounted on said last named partition directed outwardly of the barrel adjacent the ends of the liquid jets and communicating with the inner recess for projecting atomized liquid from said liquid jets, the walls of the barrel having openings therein one adjacent each liquid jet and said barrel having a length extending 'beyond the outermost part of any of said jets.

4. A portable vaporizer for directing a stream of vapor to selected portions of a room comprising an elongated hollow body forming a reservoir having a filler spout at one end, an outlet at the other end and a vent valve above and adjacent the outlet end communicating with the reservoir, a cylindrical barrel adjacent the body at the outlet end, partition walls extending laterally relative to the barrel forming a pocket intermediate the ends of the barrel and a conduit connecting the pocket with the reservoir outlet, a cylindrical partition within the pocket forming a central inner recess and a conduit extending rearwardly from the inner recess andthen laterally through the wall of the barrel for conducting fluid under pressure to said inner recess and an auxiliary outlet communicating with the recess at the side thereof adjacent to the reservoir, said auxiliary outlet having a valve therein, a plurality of L shaped liquid jets mounted on the lateral partition wall remote from the reservoir communicating with said pocket and spaced equidistant from the center and from each other, the ends thereof being directed angularly inward, and a plurality of pressure jets mounted on said last named partition directed outwardly of the barrel adjacent the ends of the liquid jets and communicating with the inner recess for projecting atomized liquid from said liquid jets, the walls of the barrel having openings therein one adjacent each liquid jet and said barrel having a length extending beyond the outermost part of any of said jets.

' HYMAN RICHARD RICH.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS;

Number Name Date 766,165 Britten Aug. 2, 1904 787,874 Bulling Apr. 18, 1905 840,917 Cramer Jan. 8, 1907 865,295 Clarkson Sept. 3, 1907 1,007,657 Freund Oct. 31, 1911 1,458,378 Astrom June 12, 1923 1,829,621 Whiteford Oct. 27, 1931 2,025,895 Praeger Dec. 31, 1935 2,134,347 Thompson Oct. 25, 1938 2,275,691 Simonton Mar. 10, 1942 2,277,928 McKee Mar. 31, 1942 FOREIGN PATENTS Number Country Date 585,010 Germany Sept. 14, 1933 Certificate of Correction Patent No. 2,515,266 July 18, 1950 HYMAN RICHARD RICH It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows:

Column 5, line 48, for the Word direct read directed; line 56, for filled read filler ,1 and that the said Letters Patent should be read as corrected above, so that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 28th day of November, A. D. 1950.

THOMAS F. MURPHY,

, Assistant Commissioner of Patents. 

